Thesaurus
Translate
Puzzles & Games
Word of the Day
Blog
Slideshows
Apps by Dictionary
My Account
Log Out
Log In
follow Dictionary.com
Dictionary
Thesaurus
Translate
More...
Our Blog
Daily Crossword
Crossword Solver
Is irregardless a word?
Favorite Button
CITE
Translate
Facebook
Share
Twitter
Tweet
Google+
Share
triangle inequality
Word Origin
noun
,
Mathematics
1.
the theorem that the absolute value of the sum of two quantities is less than or equal to the sum of the absolute values of the quantities.
2.
the related theorem that the magnitude of the sum of two vectors is less than or equal to the sum of the magnitudes of the vectors.
3.
(for metric spaces) the related theorem that the distance between two points does not exceed the sum of their distances from any third point.
Origin of
triangle inequality
Expand
1960-1965
1960-65
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Discover our greatest slideshows
Penny-farthings to Panniers: 7...
Speak with Savoir-faire: 10 French...
A Wordy Look at Inside Out's 5...
Seven Wacky Words Born in the USA
Browse more topics on our blog
What Is the Difference Between Discreet and Discrete?
Learn the correct uses of these two commonly confused homophones.
What Character Was Removed from the Alphabet?
What mistaken pronunciation gave this character its name?
Apostrophes 101
This small mark has two primary uses: to signify possession or omitted letters.
How Do I Get a Word into the Dictionary?
People invent new words all the time, but which ones actually make it?
Word of the Day
Difficulty index for
triangle inequality
Few English speakers likely know this word
Word Value for
triangle
9
12
Scrabble
Words With Friends
Nearby words for triangle inequality
trial denture
trial docket
trial docket's
trial dockets
trial dockets'
trial examiner
trial frame
trial horse
trial jury
trial lawyer
trial lens
trial marriage
trial run
trial-docket
trial-dockets
trial-dockets'
trialer
trialest
triallist
trialogue
trials and tribulations
trialware
triamcinolone
trianda
triangle
triangle inequality
triangle of auscultation
triangle of forces
triangle of safety
triangle sirloin
triangle trade
triangular
triangular bandage
triangular bone
triangular matrix
triangular muscle
triangular trade
triangular-trade
triangularity
triangulate
triangulation
triangulation station
triangulum
triangulum australe
triannual
triannually
trianta
triapsidal
triarchy
triaryl
triarylmethane dye